Year	Percent of GDP (Units)
1980	20.394
1981	22.214
1982	16.901
1983	16.122
1984	17.822
1985	19.320
1986	16.765
1987	20.583
1988	20.915
1989	25.582
1990	23.082
1991	23.943
1992	22.783
1993	23.307
1994	24.434
1995	23.905
1996	22.992
1997	24.959
1998	17.022
1999	12.485
2000	24.905
2001	24.677
2002	23.355
2003	26.710
2004	23.999
2005	23.574
2006	25.762
2007	24.358
2008	33.020
2009	33.010
2010	33.582
2011	33.173
2012	32.411
2013	30.641
2014	31.512
2015	32.028
2016	32.039
2017	32.116
2018	31.632
2019	31.074
2020	31.925
2021	31.745
2022	30.748
2023	30.405
2024	29.649
2025	29.311
2026	29.307
2027	29.424
2028	29.468
2029	29.423